关键词: 复杂天然原石, 雕铣加工, 装夹

Abstract: The complex natural stone,which can be milled and carved,refers to natural stones that exist independently in nature and have natural shapes and very delicate grains.The natural stone has the characteristics of complexity,regularity and individuality,and the size varies greatly,which is very difficult for locating clamping,and the clamping efficiency is low.At the same time,the natural stone with high hardness,uneven,brittle material characteristics,and a high cutting tool speed,which make machine tool vibrating,it’s difficult to guarantee the clamping reliability when carving and milling.The high efficient clamping method for the processing of complex natural stone carving and milling is studied.First of all,the characteristics of the carved and milled processing of complex natural stone and the difficulty of clamping are analyzed,putting forward the “232” clamping method,the clamping method contains two fixed support surfaces,three universal dynamic supports and two universal dynamic tensioners,and a set of complex natural stone fixture based on “232” clamping method is designed.The fixture can quickly and reliably locate and clamp the complex natural stone,improve the clamping efficiency and reduce the labor intensity,which provides a method of high efficiency clamping of the natural stone for enterprise.Finally,taking Tuojiang jade as an example,the practical application is made,a good application effect is obtained,and the application foreground of the method is demonstrated.

Key words: complex natural stone, carving and milling, clamping fixture